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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Long-term effect of acid and heat pretreatment of sludge from a sugarcane vinasse treatment plant on the microbial community and on thermophilic biohydrogen production

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Lamaison, Franciele do Carmo [1] ; Maia de Andrade, Pedro Avelino [2] ; Bigaton, Ademir Durrer [2] ; Andreote, Fernando Dini [2] ; Antonio, Regina Vasconcellos [3] ; Reginatto, Valeria [4]
Total Authors: 6
[1] Univ Fed Santa Catarina, Dept Engn Quim & Engn Alimentos, Florianopolis, SC - Brazil
[2] Escola Super Agr Luis Dequeiroz, Dept Ciencia Solo, BR-13418900 Piracicaba, SP - Brazil
[3] Univ Fed Santa Catarina, BR-88900000 Ararangua, SC - Brazil
[4] Univ Sao Paulo, Dept Quim, Fac Filosofia Ciencias & Letras Ribeirao Preto, BR-14040901 Ribeirao Preto, SP - Brazil
Total Affiliations: 4
Document type: Journal article
Source: INTERNATIONAL JOURNAL OF HYDROGEN ENERGY; v. 40, n. 41, p. 14124-14133, NOV 2 2015.
Web of Science Citations: 8

This work investigated how heat and acid pretreatment affected thermophilic biohydrogen production by a mixed culture present in the sludge of a sugarcane vinasse treatment plant. Heat- (80 degrees C for 15 min) or acid- (pH 3 for 24h) treated sludge samples were employed to seed batch bioreactors along 36 days. The heat- and acid-treated sludge samples afforded H-2 production rates (HPRs) of 8.4 and 9.5 mmo/L.d, respectively. The lactic acid concentration increased in the bioreactor seeded with heat-treated sludge, whilst the lactic acid concentration diminished in the bioreactor inoculated with the acid-treated sludge. Identification of the microbial community revealed that Clostridiaceae predominated in all the sludge samples. The most abundant Clostridiaceae in the heat- and acid-treated sludge samples were Clostridium and Thermoanaerobacterium, respectively. Acid pretreatment modified the microbial community and enhanced consumption of lactic acid, a metabolite that is normally associated with decreased H2 production. Copyright (C) 2015, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved. (AU)

FAPESP's process: 10/11901-0 - Biological hydrogen production by mixed culture using sugarcane bagasse as substrate
Grantee:Valeria Reginatto Spiller
Support type: Regular Research Grants